Supporting Information Microwave-Assisted Evolution of WO 3 and WS 2 /WO 3 Hierarchical Nanotrees Noho Lee a† , Junghyeok Kwak a† , Ji Hye Kwak b , Sang-Mun Jung a , Jaerim Kim a , Anupam Giri a , Kaliannan Thiyagarajan a , Yong-Tae Kim a , Sunshin Jung b* , Jong Kyu Kim a* and Unyong Jeong a* Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is © The Royal Society of Chemistry 2020